[Bug 98142] Xorg freezes for a few moments

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98142

yann <yann.argotti at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Product|DRI                         |Mesa
           Assignee|intel-gfx-bugs at lists.freede |idr at freedesktop.org
                   |sktop.org                   |
         QA Contact|intel-gfx-bugs at lists.freede |
                   |sktop.org                   |
          Component|DRM/Intel                   |Drivers/DRI/i915
            Version|XOrg git                    |unspecified

--- Comment #1 from yann <yann.argotti at intel.com> ---
There were improvements pushed in Mesa that will benefit to your system, so
please re-test with latest Mesa to see if this issue is still occurring.

In parallel, assigning to Mesa product.

Kernel: 4.8.0
Platform: Intel Xeon E3-1275 v5 - Skylake (pci id: 0x191d /PCI Revision: 0x06
/PCI Subsystem: 17aa:30c0)
Mesa: [Please confirm your mesa version]

>From this error dump, hung is happening in render ring batch with active head
at 0xfbedf8b0, with 0x7b000005 (3DPRIMITIVE) as IPEHR.

Batch extract (around 0xfbedf8b0):

0xfbedf890:      0x78090005: 3DSTATE_VERTEX_ELEMENTS
0xfbedf894:      0x02000000:    buffer 0: invalid, type 0x0000, src offset
0x0000 bytes
0xfbedf898:      0x22220000:    (0.0, 0.0, 0.0, 0.0), dst offset 0x00 bytes
0xfbedf89c:      0x02f60000:    buffer 0: invalid, type 0x00f6, src offset
0x0000 bytes
0xfbedf8a0:      0x11230000:    (X, Y, 0.0, 1.0), dst offset 0x00 bytes
0xfbedf8a4:      0x02f60004:    buffer 0: invalid, type 0x00f6, src offset
0x0004 bytes
0xfbedf8a8:      0x11230000:    (X, Y, 0.0, 1.0), dst offset 0x00 bytes
Bad length 7 in (null), expected 6-6
0xfbedf8ac:      0x7b000005: 3DPRIMITIVE: fail sequential
0xfbedf8b0:      0x00000000:    vertex count
0xfbedf8b4:      0x00000003:    start vertex
0xfbedf8b8:      0x00000016:    instance count
0xfbedf8bc:      0x00000001:    start instance
0xfbedf8c0:      0x00000000:    index bias
0xfbedf8c4:      0x00000000: MI_NOOP
0xfbedf8c8:      0x784d0000: 3D UNKNOWN: 3d_965 opcode = 0x784d

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